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Corrosion Studies

Measurement of oxygen (in aqueous and gas phases) during corrosion processes can be realized using fiber-optic and contactless oxygen sensors from PyroScience. Typical applications of our optical sensors in such studies are:

  • Determination of dissolved oxygen (DO) consumption
  • Monitoring dissolved oxygen (DO) above corroding surfaces
  • Resolving oxygen gradients developed during corrosion
  • Studies on effects of corrosion inhibitors and other parameters influencing corrosion protection
  • Microbially influenced corrosion (MIC) and impact on degradation of structural steel in marine settings
  • Biocorrosion dynamics in the environment
  • Monitoring of oxygen reduction in closed incubations, respirometric approach

Optical oxygen sensors from PyroScience feature no oxygen consumption, no chemical reaction/alkalinisation during measurements, no electrical interference (compared to polarized amperometric O2 probes), but ultra-fast measurements and high spatial resolution. They are available as retractable micro- and minisensors and without metal parts as bare fiber micro- and minisensors. All oxygen sensors can be read-out with our multi-channel PC-operated FireStingO2 , multi-analyte meter FireSting pro (also in combination with our optical pH sensors), or stand-alone with our pocket oxygen meter FireStingGO2.

Silva et al. 2018https://doi.org/10.1002/open.201800076, https://creativecommons.org/licenses/by-nc/4.0/

 

Another advantage of optical sensors compared to electrochemical sensors is the possibility to conduct non-invasive measurements through transparent vessels e.g. for atmospheric corrosion rate monitoring. Contactless read-out from the outside through the vessel wall reduces the risk of leakage.

Strebl et al. 2020, https://doi.org/10.1149/1945-7111/ab6c61, http://creativecommons.org/licenses/by-nc-nd/4.0/

 

 

Applicable Sensor Types and Products

  • Bare Fiber Oxygen Microsensors (OXB50)
  • Bare Fiber Oxygen Minisensors (OXB430)
  • Retractable Microsensors (OXR50)
  • Retractable Minisensors (OXR430)
  • Incubations with oxygen (and pH) sensor spots in closed chambers with accessories for contactless read-out
  • Microprofiling set-up (MU1, MM33, MUX2, HS1, LS1)

 

Related Peer-Reviewed Publications

Corrosion Inhibition at Scribed Locations in Coated AA2024-T3 by Cerium- and DMTD-Loaded Natural Silica Microparticles under Continuous Immersion and Wet/Dry Cyclic Exposure
Denissen et al. 2020, ACS Applied Materials & Interfaces
https://doi.org/10.1021/acsami.0c03368

Calcium carbonate particles loaded with triethanolamine and polyethylenimine for enhanced corrosion protection of epoxy coated steel
Raj et al. 2020, Corrosion Science
https://doi.org/10.1016/j.corsci.2020.108548

Respirometric in Situ Methods for Real-Time Monitoring of Corrosion Rates: Part I. Atmospheric Corrosion
Strebl et al. 2020, Journal of The Electrochemical Society
https://doi.org/10.1149/1945-7111/ab6c61

The Reduction of Dissolved Oxygen During Magnesium Corrosion
Silva et al. 2018, Chemistry Open
https://doi.org/10.1002/open.201800076

Peeking under the Iron Curtain: Development of a Microcosm for Imaging the Colonization of Steel Surfaces by Mariprofundus sp. Strain DIS-1, an Oxygen-Tolerant Fe-Oxidizing Bacterium
Mumford et al., 2016, Applied and Environmental Microbiology
https://doi.org/10.1128/AEM.01990-16

Corrosion inhibition synergies on a model Al-Cu-Mg sample studied by localized scanning electrochemical techniques
Snihirova et al. 2016, Corrosion Science
https://doi.org/10.1016/j.corsci.2016.08.008

Novel use of a micro-optode in overcoming the negative influence of the amperometric micro-probe on localized corrosion measurements
Taryba et al., 2015, Corrosion Science
https://doi.org/10.1016/j.corsci.2015.02.037

Quasi-simultaneous mapping of local current density, pH and dissolved O2
Taryba et al., 2015, Electroanalysis
https://doi.org/10.1002/elan.201500286

Marine rust tubercles harbour iron corroding archaea and sulphate reducing bacteria
Usher et al., 2014, Corrosion Science
https://doi.org/10.1016/j.corsci.2014.02.014